Process of manufacturing pure resin-oil.



'oniretiejln rss PBQCESS OF MAHUFACTUBING fUBE RESIN-OIL.

R0 Drawing. Original application filed November 18,1912, Serial No. 732.141.

filed June 10, 1913.

To all whom it may concern Be it known that .l', Mere-Ion MELAMID, a subject of the Czar of Russia, and resident of Ifreiburg, in the Grand Duchy of Baden, German Empire, have invented 'a new and useful Improved Process of Manufacturing Pure Resin-Oil, the application being divided out from my copending application for Letters Patent, Serial No. 732,141, filed November 18,1912, which matured as Letters Patent 1,0)2,448, April :1, 1914, of which the following 15 a specification.

If phosphoric acid isadded to resin oil, the purifying effect thereby obtained is not of an appreciable degree, and if said acid is mixed with resin and the mixture is heated to 200 (1., only a dark very viscous resin oil is obtained, but not an oil which is clear like water and has an aromatic taste. Such a re sult, however, higher temperature, 0 C. or more. The resin oil then obtained is clear like Water, odorless, and forms an excellent substitute vfor turpentine oil.

If resin is heated together with phosphoric acid to260 that point only is reached at which the phosphoric acid has not yet got converted into another phosphorus compound, but remains phosphoric acid andacts-as such a one. At this temperature, the purifyingaotion of the phosphoric acid is hardly of an appreciable degree, as alrcadv'said, but if the temperature is raised to 300? C or'more,

the phosphoric acid is converted into various other phosphorus compounds for instance pyroand meta-phosphoric acid. Since these substances difi'er materially from that acting, at the lower temperature, viz'. from phosphoric acic acting at 260 0., also the results or products are materially dif ferent.

My invention now consists in heating resin together with phosphoric acid to a temperature of' about 300 C. which said acid is converted into several other phosphorus compounds, for instance pvroand meta-phosphoric acid.

The process may for instance be carried out as follows: lzilogranis of technii 1 Specification of Letters Patent,

is obtained by employing a.

C. at the utmost, then or more at.

Patented Mar. 11;, 19-15.

Divided and this application? Serial no. 772,835. r

cal phosphoric acid'are heated to about 300 1000 kilograms of resin are C. or more and melted separately in a caldron or the like at about 150C. Now the two substances are mixed with each other andthis mixture is quickly heated to about 300 (1., after which the distillation is eflected.

stillto about 300 C. or more, and after this 1000 kilogramsof resin in a liquid state are passed through that phosphoric acid." In either case about 20%01' the products obtained by thus treating the resin consists of av substitute for turpentine 'oil and about 80% consists of a clear and odorless resin oil.

r Or 10 kilograms of technical phosphoric acid are heated in a Besides resin, also distillates may be, treated in the before-described manner further and further purified bythe. same.

Having now described my invention, what I desire to secure by a patent of the United States is: w

1. The process for producing pure resin oils, consisting in mixing resin and phos- 'phoric acid, heating the mixture to a temacid is converted into perature atwhich said and meta-phosphoric pvro-phosphoric acid acid, and then letting these compounds act upon the resin. substantially as described.

2. The process for producing pure resin oils, consisting: in adding phosphoric acid to resin. heating the composition to about 300 C. and more so ts to cause said acid to be converted into pyrophosphoric acid and meta-phosphoric acid, and letting these compounds act upon the resin, substantially as described.

3. The process for producing pure resin oils. consisting in heating resin and phase phoricacid to a temperature at which said acid is converted into nyrdphosphoric acid, substantially as described.

and may be 4. The process for producing pure resin oils, consisting in mixing and phosphoric acid. heating the mixture to a temperature at which said acid is converted into pvro-phosuhoric acid and meta-phosphoric acid, and then letting these compounds act upon the resin, substantially as described.

5. The process for producing pure resin distillates of resin oils consisting in adding phosphoric acid'to In testimony whereof I affix my signature distillates of resin, heating the composition in presence of two witnesses. 1 t0 abont 300 C. and more so as to cause DR. MEILICH MELAMID: said acid to be converted mto pyro-phos 5 phoric acid and meta-phosphoric acid, and Witnesses:

then letting these compoiinds act upon the A. DELK, resin, substantially'as described. 7 :H Ms'rmnon. 

